Motor-vehicle.



S. B. GRAY, DEGD. B. s. GRAY, nxnomrom.

MOTOR VEHICLE.

APPLICATION FILED FEB. 24, 1908.

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S." B. GRAY, DEGD.

B. s. GRAY, nxnonwon.

MGTOR VEHICLE.

. APPLICATION FILED rm. 24, 1908.

9%3 Patented Jam 1, 1909.

5 SHEETS-SHEET 2.

mum I S. B. GRAY, DECD. F

B.S. GRAY, 2x30111303. MOTOR VEHICLE.

. APPiIIUATION FILED FEB. 24, 1908. I

993,789. Patented June 1,1909..

6 SHIZETS'-SHEET 3.

VIII/III (I s. B. GRAY, DEGD.

B. S. GRAY, BXEOUTOR.

MOTOR VEHICLE. APiLIOATION FILED FEB. 24, 1908.

Patented June 1,1909.

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S. B. GRAY, DEGD.

B S. GRAY, EXBOUTQR.

MOTOR VEHICLE.

APPLICATION FILED FEB. 24, 1908.

Patented Jun 1.1909.

' s SHEETS-SHEET 5.

0 O EEEQE M Wheels.

warren s'rncrnsrn'ruu'r air-sine.

STEPHEN B. GRAY, OF JACKSONVILLE ILLINOIS; BARTLETT S. GRAY EXECUTOROF SAID STEPHEN B. GRAY, DECEASED.

MOTOR-VEHICLE Specification of Letters Patent:

' Appfieatioxffiled February 24, 1908. Serial No. 417,271.

Patented June 1, 1909*.

T 0 all whom it may concern:

Be it known that I, STEPHEN B. GRAY, a resident of Jacksonville, in the county of Morgan and State of Illinois, have invented certain new and useful Improvements in Motor-Vehicl es, of which the following is a full, clear, and exact description. I The present invention relates to motorvehicles, and more particularly to the mechanism for driving and steering the tractionwheels thereof.

The invention designs to provide an improved friction drive-mechanism for a motor.-

ism being; adapted to, operate the traotion' wheels at traction-maintaining speed acc0rdins; to the different steering-operations.

The invention still further designs to provide an improved drive mechanism and steering-mechanism for motor-vehieles.

The invention consists in the several novel.

features hereinafter set forth and more par-. ticnlarly defined by claim at the conclusion hefresf.

In the drawings: motoovehicle embodying the invention, the vehiele-body being removed or broken away. Fig. 2 isa side elevation. Fig. 3 is a trans verse section on line 33 of Fig. 1. Fig. 4 is a similar view taken on line 44 of Fig. 1. Fig. 5. is a detail section of parts of the adlUSlLlXlQ-lllGCllflJllSIll for the driven friction- Fig. 6 is a transverse section on line 66 of Fig. 1." Figs-7 and 8 are details .of the reversingalevioefonone of tlie steering-connections, illustrating the device in its alternative positions respectively. Fig. 9 isa section on line 9-9-of Fig. 7. Fig". 10 is a section on line 101() of Fig. 8. Fig. 11 is a longitudinal section on line 11] 1 of Fig. 1

Figs. 12 and 13 are details of the device for ren dering inoperative the mechanism for dilierentially adjusting the driven frictionwheels, to vary the relative speed of the driving-connections. Fig. 14 is a section online lee-1s of Fig. 12. Fig. 15 is a deiailview of Figure 1 is a plan of a one of the hangers for pivotally sustaining the inner ends of the driven friction wheelshafts. Fig. 15 is aplan of the bearings for the inner ends of the driven friction-wheel shafts the supports being shown in section. Fig.- 16 is a plan of a vehicle having the driving' connections for the front-wheels omitted; and Fig. 17 is a side elevation of the-same.

The vehicle usually comprises a suitable frame or body A which is suitably connected to and supported by a front axle 12 and a rear axle 13. A-pair of front wheels B and B are dirigibly mounted or'pivotall connected to the front axle and a pair of w eels (I and Care similarly connected to the rear axle. Each of the wheel mounts is provided with a sprocket wheel 14 whereby it may be driven by the driving c onnections hereinafter set forth. The frame comprises inverted archbars or frames a and of secured to the body and truss-bars a also secured to the frame.

A longitudinally extending main drive shaft D is journaled in bearings d mounted on the frame bars a and a and is usually driven by a motor (not shown).

A main drivewheel or disk E is secured to the main drive shaft and is provided with oppositely disposed friction drive-surfaces e and e which are employed for'operating the driving-con nectionsso the vehicle will be propelled for- I wardly. A pair of friction drive-disks E and E 'are also secured to the main drive shaft and are provided with oppositely disposed or fac ng friction-surfaces for operating the drivmg-conneetlons in reverse direction. Diskwheel E may also serve as a flywheel for the main or engine-shaft D, or to drive a belt.

A driving c onnection is provided for one or more of the traction-wheels at each side of the vehicle. Each of said driving-conned tions comprises a pair of friction-wheels F, F arranged to engage the oppositel.y-dis posed friction-drive surfaces 6, it of the driving-wheel or disk E respectively. Each of the friction-wheels F, F is slidably mounted and connected to rotate with a transversely extending shaft 18 which has its'inner end journaled in a swiveled box 19' (Fig. 15) held in a'hanger 21 which is slidably niountenfon; a rod 20 securedin a bracket 20 dependin from the frame'ri. The outer end of each 0.: the shafts 18 is "journaled in a swiveled box 22 suitably. sustained by one of the frame bars at Thepurpose of mounting these lot as l

shafts in swiveled boxes is to permit the inner ends thereof to he shifted to cause the fric driven shafts 1.8 is connected to drive both of the traction-wheels at one side of the vehicle. A pair of friction-wheels F, F, each of which is driven by the oppositely disposed friction faces of wheel E, is employed for the connections at each side of the vehicle re spectively. T he purpose of this construc tion is to provide a plurality of wheels for driving each connection so that there will be less likelihood of slippage in driving; the connections. The shafts 18 of each pair of pulleys F, F are respectively connected to conjointly operate the connections for the traction-wheels, by a sprocket wheel .23 on one of the shafts, a. chain 24 connecting said sprocket with a. sprocket-wheel 25, which is mounted to be operated by a gear-wheel 26 which meshes with a gear-wheel 27 on the other of the shafts 18. 'lhegears 26 and 27 are intcrposed in the connection so that both frictionwheels F and F will operate the several members of the connection in. the same. direction.

A. sprocket-wheel secured to the shaft 18 of friction-wheel F at one side of the e-' hicle, drives a chain ZS) for driving the sprocket-wheel 14, which is operatively con nected to the traction-whccl (1' A. chain 30 operativcly connects a sprocket-wheel 31, which secured to revolve with pinion 26 and sprocket-wheel 25, and the sprocketwheel H- which is connected to the front traction-wheel B. Similar (lI'lViIl l-COIlT10C tions are provided at the other side of the vehicle for drivin the traction-wheels C and B The shafts 18 for the friction-whcels F, F.

respectively, are conjointly shiftable into.

and out of engagement with the drivingfllCtlOIhPllllGYS against their drivine-faces faces (2, c of the drive-wheel E by controllingniechanisni (Figs. 1 and 11) comprising a rod (.2, which is connected at its front end to a suitable. lever l (shown in dotted lines) adapted to be locked in assigned position. itod G is connected to shift the front pair of shafts 18 by a lever g which has its upper end pivoted ti said rod, and its lower endv pivotally connected to a linkg. A link 9 is pivotally connected to the hangers 2]. in which the swiveled bearings 19 are mounted, and link 9 is pivotally connected to the link 9 medially so that when lever g is operated the bearings for both of said shafts will be shifted to cause the friction-wheels mounted thereon to he correspondii'igly shifted. By means of this jointed connection the pressure of the will be equalized. 'lheshaft 18 of each of the rear pair of friction-wheels F is similarly connected by means of a link g and is also operatively connected to the rod 9 by a link 9, lever g, link 1", lever 7 and link g". This controlling-rod G and the connections aforesaid, provide means for shifting: all of the friction-wheels .F, F, conjointl and sill'lllltfillGOUSl'v' into and out of engagement with their respective driving-faccs, or hy extended shift the friction-wheels F, F respectively may he shifted into engagement with the disks E and F/ respectively, to drive all of the connections in reverse dirccl ion.

Each of the friclion-wheels F and F is slidahly mounted on its shaft 18 by means of a key secured in its huh and mounted to slide in a key-way 18 (Fig. 3) in the shaft so that said wheels may he adjusted radially with 'rcspcci to the axis of revolution of the main drive-shaft l), to vary the relative speed of said pulleys with respect to the main drive shaft. The mechanism for -adjustin c the friction-wheels to vary their speed and to correspondingly vary the speed of the driving connections operated thcrchy, compriscs a. wheel .l:l secured to a shaft 71 extending through the steering-post and having a hovcled gear 72 secured to its lower end. and a. shaft 72 halving a. pinion '71. meshing with near it, a sprocket wheel 72." secured to said shaft, :1. chain h connecting said sprocket-wlreel, and a sprocket-wheel 71 which adjusts the screwoperated mechanism (Fig. 5) for shifting the friction-whcels F, and F. Each of the wheels F,FI is adjusted on its shaft 18 by a. link 71. (Fig. 3i which is suitably connected to a non-revoluble collar it disposed in a groove in the hub of each of said wheels. Each link 7L7 is pivotally connected to the lower end Of' an arm 72. which is secured to a rocleshaft 7N3: One of said rock-shafts is disposed at each side of the vehicle and op-- crates the leversli. for the friction-whcels F and F at the corresponding side. Said l'lllk' shafts it are simultaneously and equidistantly operated, to conjointly shift all of the friction-whcels F, F. to or from the axis of revolution of the drive-shaft .l hy spun-fail.- wheel M which is secured to a. sleeve is.- which is provided with internal right and lefthand screw-threads for respectively operating the corresponding thread on a rod I2 which is connected to an operating-arm it" to the. rock-shaft 71 at one side of the vehicle, and for operating a. rod l1 which is connected to an arm 71/" secured to the rock-shaft h at the other side of the vehicle. Resultantly, when controlfer-wheel ll is turned it will operate gears ft, 7L3, shaft h spr ckct-whecl h chain h and sprocket-wheel ft. j Said sprocketwheel It will correspondingly turn sleeve ft" and operate the screw-rods It and It. in opposite (irections respcctividy to conjointly and coi'respondingly shift rock-shafts /2' which will effect shift of arms 7t" and levers it which are connected to the friction-whccls F, F respectively. l-lesultantly, the wheel or lever ll. controls and serves to simultaneously 923 89 I v as and conjointly adjust the friction-wheels F, F to cause said wheels to be driven at dificrcnt speeds from the main drive-shaft.

Each of the front and rear tractionqvhccls is pivotally'connected to one of the axles so that each is dirigible. Associated with each pivotal wheel. mount is a suitable driving connection operated by the sprocket-wheel 14 and which permits the wheel to be'driven when it is run straight or turned at an angle with respect to the vehicle body. The speeific construction of this wheel mount forms no part of the .present invention and an example of this type of mount is illustrated and set forth in an application for Letters Patent filed, by me Fe ruary 13, 1907, Serial No.

- 357,184, to which reference may be had for i the details thereof.

. speed when desired.

The improved drivinganeehanism is of suchconstruction that each of the wheels will be positively driven and embodies mechanism whereby the traction-wheels at one side-of thevehi'cle may be driven at a differential speed with res set to the tractionr wheels at the other si e when the vehicle is traveling around a turn, so that each of the wheels will be driven at proper tractionmaintaining speed, thus avoiding the use of the usual differential or slip gear-mechanism which permits one wheel to travel faster than the other or slippage of the friction-wheels but does not positively drive each of'the wheels at such speed that traction of all of the wheels will be maintained at all times.

At times, it is desirable to turn all of the wheels in'the same direction to cause the vehicle to move bodily laterally and longitudinally, in lieu of the more usual turning move ment in which the rear and front wheels travel in substantially the same curvilinear path. When the former mode of steering is employed all of the wheels should be driven at substantially the same speed. To permit all of the tractron-wheels to be turnedin the same direction to greater or less degree and cause allof the wheels to be driven at. the same speed n'ieehanisni is provided which sets the .dllVlIlg-fllfilliillisll'l'SO that all the wheels will be driven at. the same relative Steeringqneans is provided which is adapted to swing all of the ,tractionavheels about their; pivotal connection with the frame. 'A

steering-Wheel or lever'K is suitabl mounted to operate a hollow shaftor steer'ng-post k which operates a longitudinally extending shaft 53 by means; of a pinion 54 and a gearwheel 55' meshing therewith (Fig. 2). The swinging orstub axle of each tra'ction-wheel has secured thereto an arm 56 whereby the wheel can be swung laterally-in the desired direction. The arms of the front and rear wheels respectively are cross-connected by a link 57, so that they will be caused to swing i in unison and equidistantly by thesteeringsitions, causes the front wheels to be swung ma e a turn inthe' more usual way.

steering the front wheels by the steeringshaft 53 and operating the cross-connector 157 for the front wheels, comprises an arm 58 (Fig. 4) secured to shaft 53, link 59 (Fig. '4)

connected to the upper end of a lever 60 which is pivotally sustained by a shaft 61 (Fig. 12') and secured toa longitudinal sleeve 62 on said shaft,.hy a bracket 62- (Fi 14). The lower end of lever 60 is connects by a link 62* to the'cross eonnector for thefront wheels, as at 63. Whenthe steering-wheel is turned the front wheels are operated by said connection and sleeve 62 is oscillated to operate the steering-connection for the rear reels, which com rises (Figs. 6-7) a lever or frame 65 secure( to the rear end of sleeve 62 and a link 66 which is ivotally connected to a stud 67 on a slide w ich is mounted in lever 65 and'l'ocked thereto, and the other end of link 66 is pivotally connected to the upper end of a lever 58, which is pivotally end connected to the eross-eonnector 57 for the rear, steering-wheels by a link 70" which is pivotally connected to said lever as atv 71 and to said cross-connection at 72.

The steering-mechanism, when the steer- 'ingeeonnection is in one of its alternative poconjointly and equidistantly in one direction and the rear wheels to be swun in the op osite direction when the vehic e is to When that occurs, the inner wheelstraveling over an arc of shorter radius than the outer wheels, are driven at a slightly lower speed in order that they may be positively driven at traction-maintaining speed and according to the distance over which the wheels respectively. travel. To effect this 'diiierential travel of the traction-wheels according to the angl'e at which the wheels are turned' the friction-wheel's F and F are conjointl'y adjusted to cause the driving-connection at one side cf the vehicle to be driven at a dif ierent relative speed with 'respe-zt to the driving-connection at the other side of the vehicle. This adjustment is effected by operating the adjusting-conne tions for the wheels F, F so that the friction wheels F, F at one side will be-moved from, and the friction-wheels F, and F at the other side will be moved toward the axis of revolution of the driving-disk'fwhereby, the driving-conneetions at each side of the vehicle will be dri-ver iv at .difierent relative speed when the steering-wheel is operated.

Themechanism for differentially adjusting the friction-wheels comprises (see Fig. 4) a leverLwhieh is pivotally tonne. ted at' its upper end to the frame, anda link 73 which iseon-' nected at one end to stud 74 on lever 60. Stud His normally locked in the lower end of. lever-to. Link 73 is connected to lever I in the same direetion.

which latter is ronnei-ted bv means of a eoleontrolled by a hamI-lever S? (Fig. lar t to the srreW-sleeVe l1 where-b3 the adjusting-me-ihanism for the friet-ionqv'heels l and F is operated. ,When the sleeve is 'operated b vmeans of lever l, arms 71" and roek-shal'ts II" are operated in the same di rei. tion so that. in lieu of adjust in; the wheels 1 l" to maintain the same relation with respeet to the main drive-su:d they will be ditl erentiallv operated, so that thel'rietionwheelsat one side will he adjusted toward 4 said shaft and those at the other side will be adjusted away from the shaft; thus (arising the driving-round tions at the sides of the vehicle respetivelv to be driven at ditl'erent speeds. Stud T-t being tonne-J ted to lever 60 of thesteeringane: hanism will be operated iorresponding to the steeringqvheel and eorrespomlinglv adjust the friet'onwheels tocorrespondinglv drive the tra. .tionwheels at one side of the machine art-different speed-with respeit to those at the other. v ".hen the traetion-wheels are held to travel straight then the steering-wheel operated eonnetion, whieh rontrols the ditl'erential adjustment of. the l'rietion-w heels i F holds the sere w sleeve It in position to cause the frietion-wheels to be driven at the same. speed to rause all of the ll'2l\ tion-wheels to he orrespondinglv drh en. li'hen the'steering-deviee operated to tause the vehiele to turn in either direction the triet ion-wheels l F will he relatively adjusted to rause the driving-eonneetionsl'or the wheels at the inner side ot theturn to lre driven at alower speed than those at the outer side. This variatlon ol relative speed ovturs when the stud 74 loiked in operative or etientrit position seen in Fig. 4. liesultantlv, when the steering-limehamsm is operated, the relative speedof the wheels at one side is torre- .spondingl v varied with respest to the speed .of the wheels at the other side and a. t ordmg 'to the direction in which thevehieleisturned. to always tause all oi thewheels to he positively driven at traction-maintaining speed.

"in practice it is sometimes desirable to turn all of the traet-ion-wheels in the same dirertion to eause both the trout. and rear wheels to move terally in the same direetion, so as to ea -se the vehiele to steer or move bodily to one side or the other opposite direetions relatively, they will he operated to turnall ot the traetion-wheels \lhen this method of steering is used all of the traetion-wheels are positively driven at the same speed. It device is provided to manipulate one of the Tu y permit this to he done. the steering-eonneei trout and rear steering-eonneetions.

.stud 67;

ll ph t ally sustained. at 83 and provided with a segmental Itlelt tor rotating, a pinion iii and a shall 85 whereto the pinion is secured. the rea r end of said shat't a. sprocket-wtiee' a is seeured and this sproelwt-wheel operates a ehain fst'r whieh operates sproehet H7 seeured to sh: it (it whieh extends through and is jourualed in sleeve (32 which eonneets h l i) the rear end of shall (51 is secured (id; T to! a segmental raek or toothed wheel .ih whirl) is adapted to dirt a slide 89 whirh is m unt-- ed in lever (55 and hirh arries the reversible Slide St! has it series ol teeth tlt adapted to he engaged by the teeth ot' wheel 38 to shift the slide and stud h? to the opposit-e side of the lever-fulcrum or sieexe n2, so that the steoring-eonneetion dinit on. lever 5S, link 57 and arms Sol will operate the rear iI;lLiltHl-\\iHtlS in t he same dirertion as and correspondingly to the. t'ronewlwe s when the parts are in position illustrated in Fig. 8.

The end-teeth lit) on slide 249 a re termed to respectively engage a. eoneentrie sin-lave 88 on wheel 88 when the slide is in either of its alternative operative positions to loel; the slide and stud 67 against radial movement, but to permit the slide to swing with esultantlv, the slide is loelwd .devieelnay be manipulated at an v time no matter what the position ol steeringuvheel or eonneetions may be, from either Hi 51:

ernative. positions.

By means oi lever 83 and the revel-slidev ronneetion al'oresaid, the steeringvrheel may be used in the same manner to ron'irol the eourse ol' the vehiele, by swinging all ot' the wheels in the same direction, or by swinging; the trout and rear wheels in opposite. din tions respeet ivelv.

When the steering-eonneetions are open ated to turn all ol' the traetion-wheels in the same direetion. theineehanisln tor ditl'eeentiallv adjusting the lriet'ionwheels l" and at earh side respeetively. should be ad justed into and held in position to eause the steeri1igeonneetions, r. 9., the rear, so that j the movement thereol' will be in reverse direetion from that normally given to it by the steering-lover. This reversing-deviee is driving-eonneetions at both sides ol' the vehiele to be driven at the same relative. speed. For this purpose, stud T li s slidabl mounted in lever (it) (Figs. t2-l-l) whieh is operated hv th steeririg-wheel. When the tlllltl'tdliltll adjustiuganeehanism is to be rendered inoperative, stud 74 is shilted into 'Fdead center relation witha'rejs'pect to "so-that when the latter is'oscillated it willnotoperate link 73, lever I, and sleeve hf, to ya the relative position ofthe' frict 'tlon whee F, Fih response to the steering lever. The rnechanism .for rendering this CODIIGGtlOIl noperative bythe steering-lever is controlled-by shaft 61, which is operated by lever 82 which is employed for'reversing one-of thesteering-connections. Stud 74 is secured to a slide 95 which is provided with a series of rack teeth 95 and confined in a way formed inlevler 60. A toothed wheel 96, secured atthe front end of shaft 611,

is'adapted to shift s'lide'95 fro'mits operative position (Fig. 12) to its inoperative position (Fig. 13). The and teeth 95' are adapted to engage concentric surface 96 on wheel 96 to lock the slide in either of itsalternative,

positions so it will be secured "against tan gential movement, but free to oscillate with leverffiO. This construction makes it ,pos sible to render the difierential adjustingmechanism for the friction-wheels inetpersgf ative and to lock the same in shifted relation to the lever, and does not at anytirne'mterfere with the operation of the steeringinechanism. Hand-lever 82 when it --1s' manipulated to vary the steering-connec- 3 tions for the traction-wheels to change the mode of steering, rotates shaft 61 to adjust stud 74, so the friction-wheels F F at the' ly will be.

sides of the vehicle 'respectiv locked in POSltlOIl to cause all ofte tractibnwheels to be driven at the same relative speed. The same 0 eration ofhanddever 82, which controls t e reversing-devised the steering-connection, thusfcont-rolsi the device for rendering the differential :adju'st 40 ing-mechanism operative and inoperative;

If desired, the improved drivingemeohan-I ism may be applied to a vehicle in which-only one wheel at each side isdriven as shown in Figs. 16 and 17 in which the driving-connection for .the front-wheels is omitted. The

construction being otherwise, the same as that heretofore described. 4

The operation of the improved mechanism will be as follows: Main drive-shaft D, being driven by the riiotor, will impart-"revolution to the drive-wheels E, E and E? cnwhich the friction driving-faces are secured. Normally the rod G will be held inpositlon'to cause the friction-wheels F, F! to be d scus gaged from the driving-faces operated by the'g main shaft. To connect the driving-meal? anisrn to the main shaft, rod G w1ll be operated to simultaneously shift the frictionwheels F, F into engagement with the frie U0 tion-faces of driving-wheel E respectively. The drivin '-connections at each srdeof thevehicle wil then be driven and if. the wheels are traveling straight ahead the frlotl'qn: wheels Willbeedjusted to operate bothajol? t5 the driving-connections and all of the trac adjusted into such position.

tio1i-wheels at the same relative speed. To correspondingly vary the speed of all of the traction-wheels to change the speed of the vehicle, controller wheel H will be operated, which will cause the friction-wheels F, F to be simultaneously, conjointly and equidistantly adjusted to or from the axis of revolution of the main drive-shaft so the speed of the traction-wheels will be correspondingly varied. When thesteering-wheel is manipulated to cause the vehicle to travel to either side the front and rear wheels will be swung in opposite directions respectively .by the steering-connections and lever will simultaneously operate stud74, link 73, and lever v Iito operate the adjusting-mechanism for said friction-wheels so the driving-connection at one side will be driven at differential speed with respect tothe drivingronhection and traction-wheels at'theother side and so that thespeed of one of said connections will be increased ,and the other decreased correspondingly and so that the Wheels B and C will travel-at greater or less speed with respect to the wheels B, (l at the other side ac cording. to the direction in and extent to which the tractionwheels are turned. Thus,

\ it will be seen, that if the traction-wheels be turned in either direction their relative speed will be varied so that all of them will be driven at substantially tractionvmaintaining'speed. When it is (lGSlIGdtO steer center relation fwith respect to lever 60 so.

thatmanipiilatibn of the latter by the steeriiig whel K will not affect the connections for diflerentiall -adjusting the frictionwheelsF, F? am "so that. said stud am the conn'ection controlled thereby, will be locked to be driven at'the same speed. justing-mechanismis not in normal position, the operation of lever 82 will cause it to be Reverse shift of lever 82 will cause stud 67 for thc;rear steering-connection and stud 74 for the dif-' ferential adjusting-connectii'an to be setand locked in proper position for operation of the front and rear traction-wheels in opposite directions by steering-wheels K, and to cause differential adjustment of the pulleys by the steering-wheel.

The invention'is .not to be understood as in position tovcause all of the traction-wheels 1 If said adrestricted, to thedetails illustrated and dc,

scribed since these -may be modified by the skilled mechanic without departing from the 1 main drive-shaft, a pair of friction-snrfaces spirit and scope of the inventionv Having thus described the invention, what I claim as newand desire to secure by Lette'rs Patent, is:

1. In a motorwehiele, the con'ibination of a pair of rear and. a pair of front wheels, a main drive-shaft, a pair of friction-surfaces on and operated by said shaft, and a pair of driving-connections one for a wheel at each side of the vehicle respectively, each of said driving-connections comprising a pair of friction-wheels engaging said friction-surfaces respectively.

2. In a IIlOtOl'-VlllCl6, the combination of a pairof'rear and a pair of front wheels, at main-drive shaft, a pair of fricLion-surfaces o positely disposed on and operated by said s aft, and a pair of driving-eonnectioiis, one for a wheel at each side of the vehicle respectively, each ofsaid driving-connections com-' prising" a pair of friction-wheels engaging said friction-surfaces respectively.

In a notor vehicle, the combination of a pair of rear and a pair of front wheels, a main drive-shaft, a pair of friction-surfaces on and operated by said shaft, and a pair of driving-connections, one for a wheel at each side of the vehicle respectively, each of said driving-connections comprising a pair of adjustable friction-wheels ei'igaging said friction-surfaces respectively.

4. In a motorwchicle, the combination of a pair of rear and a pair of front wheels, a

, 1nz'tindrive shaft, a pair. of friction-s11rfaocs ;on and-operated by said shaft, and apair of driv ng-eonnections, one for a wheel at each side of the vehicle respectively. each of said.

driving-eonnections comprising a pair of axially adjustable friction-wheels engaging said friction-sorfaces respectively.

5. in a motor-vehicle, the combination of a pair of rear and a pair of front wheels, at main-drive shaft, a pair of friction-surfaces oppositely disposed on and operated by said shaft, and a pair of driving-comicctions, one for a wheel at each side of the vehicle rcspec; tiyelyg each of said driving-connections comprisins a pair of axially adjustable frictionwheels, engaging said friction-surfaces respectively.

6. In a niotor-vehicle, the combination of a pair of rear and a pair of front wheels, at

main drive shaft, apair of friction surfaces on and operated by said shaft, a pair of drivingsconnections, one for a wheel at each side of the vehicle respectively, each of said driving-eonnections comprising; a pair of friction-wheels engaging said friction surfaces, respectively, and means for con jointly shifting both pairs of said friction wheels to bring them into or out of engagement with said friction surfaces.

, 7. In a motor-vehicle, the combination of a pair of rear and a pair 01' front wheels, a

oppositely disposed on and operated by said. shaft, a pair'of driving-conncclions one for a wheel at each side of the vehicle respcc-- lively, each of said driving-comaions comprising a pair of friction-wheels cnrqagi no" sa id friction-surfaees respectively, and means for conjointly shifting bot pairs of said friction-whcels to bring them into or out of on gragement with said friclion-snrfaccs.

S. in a motor-vehicle. lhc'combinalion of a pair of rear and a pair of front wheels. :1 main drive-shaft, a pair of friciionsurfarcs on and operated by said shaft, a pair of driving-connections one for a wheel at each side of the vehicle respectively, each of said driving-connections comprising a. pair of fricl ion-- wheels engaging said fllCllOll-slllf=.l(' H rcspeetively, and means for conjointlv shifting both of said pairs of friction-wheels radially to vary the speed of the driven wheels.

9. In a motor-vehicle, the combination of a pair of rear and a pair of front wheels, a. main drive-shaft, a pair of friction-surfaccs oppositely disposed on and operated by said shaft, a pair of driving-comicctioi1s one for a Wheel at each side of the vehicle respectively each of said driving-colmeetions comprising a pair of friction-wheels engaging said friction-surfaces respectivefv, and means for conjointly shifting both of said pairs of friction-- wheels radially to vary the speed of the driven wheels.

10. In a motor-vehicle, the combination of a pair of rear and a pair of front wheels, :1 main drive-shaft, a pair of fricth nsurfa -cs on and-operated by said shaft, av pair of driving-connections one for a wheel at each side of the vehicle ICSPQCllVOLY, each of said driving-conncctions comprising a. pairof friction-whecls engaging" said friction-surfaces respectively, means for conjointly shifting both of said pairs of friction-wheels into and out of engagement with said frictionsurfaces, and means for conjointly shiftin said friction-wheels radially to vary the speed of the wheels driven tlmrcby.

11. in a motor-vehicle, the combination of a pair of rear and a pair of front wheels, :1 main drive shaft, a pair of friction surfaces oppositely disposed on and opc atcd by said s raft, a pair of driving-conncctions, one for a whcefat each side. of the vehicle respectively, each of said driringwonncctions comprising a pair of friction-wliccls engaging said fric-tionsnrfaces respectively, means for conjointl shifting botlnof said pairs of frirt ionwheels into and out of engagement ith said friction-sin'faccs, and means for conioinily shifting said friction-wheels radially to vary the speed of the wheels driven lherehv.

12. in molm-vehicle, the ctnnbimnion of a pair of rear and a pair of front wheels, a main drive-shaft, a pair of fricli msnrf:n-es on and operated by said shaft, a pair of driving-conneotions oneifor a wheel at each side of the vehicle respectively, each of said- (the.

ing-oormections comprising a pair of iriction Wheels engaging said frictiomsurfaces respectively, and means for oohiointiy adjusting the friction-wheelsradially to relatively vary the speed of the drivirigmonneetions.

13. In a motor-vehicle, the combination of a pair of rear and a pair off-rent, Wheels, a main drive-shaft, a pair of friction-surfaces oppositely disposed on'ancl operated by said sit, a pair of drivin connections one for a wheel at each side oi it re vehicle respectively, ease of said dnving'eohneotmns comprising a pair of friction-wheels engagihg seid frictionsuriaes respectively, andmeans for com omtly ad ustiog'hothwf "said pairs of friction-Wheelsradially to relatively vary the.

speed of the driving-connections.

14. in a motor-vehrcle,'the combination of a pair 0f rear and a pair of front wheels, at

niaiirdrive-shait, a pair of friction-surfaces on and operated bysaidshaft, a pair of drivin =connect1ons one f-dr a wheel at each Sit e of the vehielorespiebtively, each of said drivi ig oonn-ectioris eomprising a pair of friction-wneels engagmgsaid frrctromsurfaces respectively, and means a shifting, bothof said pairs of firicti'oig means or con oiutly whe-els (iomprising iiting them radially thespeed oi'vooth to correspondiaglvi "driving connotations an Etc congointly adjust both'pairs pi said friction-wheels radially to rel ahvely vary the 'speed of the driving-con.

neotions;

V 15in a motorwhiele, the combination of a pair of rear and 'a pair of front Wheels, a main d ive-shaft, a pair of friction-surfaces o positely disposed on andoperated by said s lift, a pair of dliving-connections one for a Wheel at each side of the Vehicle respectively, each of said draving-connections comprising a pair of frictioii-wheels engaging said friction-surfaces respectively, and means for shifting both of said pairs of frictionwheels, comprising means for conjointly shifting them radially to correspondingly vary the speed of both driving-oonnoctions and to conjointly adjust both pairs of said iricti-on-\vhcels radially to relatively vary the speed of the driving-oomiections.

16. In a'motor-vel1icle, the ooinbination of a pair of rear and a pair of front wheels, :1. main drivo-shalt, a pair of frictiomsurfaces on and operated by said shaft, a aim of driving-oonnectlons one for a whee at each side of the vehicle respectively, each of said driving-connections comprising a pair,

of friction-Wheels engaging said frictionsurfaces respectively, a St661l11g--Ll'VlCG, and

means for conjointly adjusting'both pairso'f friction-wheels to relatively vary the speed ofsaid dliving-connections, said adgu's ting- 1 means being operated by said steering device.

17. in a'motor-vehicle, the cmnhination ore pair of rear and a pair of front wheels,

a main (.lriv-shait, apair of friction-sur-' faces oppositely disposed on and operated by said shaft, a pair of driving-conneetions, enefor a wheel at each side of the vehicle respectively, each of saiddriving-conhections cornprising a pair of friction-wheels engaging said friction-surfacesrespectively, a steering-device, and means for con'jointly adjusting both pairs'of frictiomwheels to 'reietively vary the, s eed of said drivingconnect1ons, said a gusting-means being.

operated bysaid steering-device.

,18. In a motor-vehicle, the combination of a pair of rear and a pair ofifront wheels, a iniain drive-shaft, a pair of friction-surfapes onand operated by said shaft, a air of driving-connections one for a whee at each side of the vehicle respectively, each of said driving-connections oomp'risin a" pair of friction-wheels engaging said riotlon surfaces respectively, a steering-deities, means for con ointly ad asting both pairs .of friction-wheels to relatively vary the speed 'of said driving connetions, said adjusting-means being operated by said steeringedevice, and means for shifting both of said pairs of frictionavheels into and out of engagement with said friction surfaces.

19. In a motor-vehicle, the combination of a pair of rear at main drive-shaft; a pair of friction surfaces oppositely disposed on and operated by said shaft, a pair of driving-connections, one for a Wheel at each side of the vehicle respectively, each of said driving-connections icomprising a pair of friction-Wheels engaging said friction-surfaces respectively, a steering lm'ice, means for conjointly adjustiiig both pairs of friction-wheels to relatively vary the speed of said driving-eonnections, said adjusting-means being operated by said-stoering-device, and means for shifting both "pairs of said friction-wheels into and out of engagement wlth'said friction-surlaoes, o

20. in a mptor-vehicle, the combination of a pair of real and a air of-front tractionwhoels, a inain-drivesii a pair of (lrivingmonnections, one for both wheels at one side of thevehicle and the.

other side, each of,said driving-cornicetions d a pair of front wheels, at

, aftpa pair of friction. surfaces on andoperated by said shaft, and

L-omprising a pair ol' friet ion-wheels engaging rietion-surl'aees respeetiYel Vi and means 'lor eoinomtly shitting: hoth pairs ol' said lllewheels at the other side, eat-h of said drivin geomieetions eomprisin; a pair of l'rietionwheels ei'ig'aelng said l'rietion-snrl'aees respeene side (it the vehiele and the other for the wheels at the other side. eaeh ol said driving:- eonneetions eomprising a pair ol l rietionwheels engaging said l'rietion-snrl'aees respee lively, and means l'or eonjointly adjnstiing hoth pairs ol' l'rietion-wheels radially to relati .'el rary the speed ol' the drivine-eonneotions.

1-17. in a. motor-vehiele, t ie eomhinaition of a pairot r a' and a pair ol l'ront traetion- 'eels a main drive-shall, a pair of frictionsnrl'aees oppositel) disposed on and operated h said shall, a pair o1 driving-eonneetions tively, and means for eonjointly 'shil'tingr' hoth of said pairs of friction-wheels radially to vary the speed ol the driven wheels.

23. in a motor-vehlele, the eomhmat'ion of one for hoth wheels at one side'ol the vehiele and the other for the wheels at the other side,

; eaeh. of said driving-eonneetions eomprising l a pair ol lrietioiewheels engaging said triewheels, a main drive-shalt, a pair of lrietienr snrl'aees oppositely disposed on andoperated by said shalt, a pair of .drivingwonnwtions a pair of rear and a pair ol' l'ront traetion tit) shitting said one for both wheels at one side ol the vehiele and the other for the wheels at the other side. each of said drivingmonneetions eomprisinea pair of :t'rietion-wheels engaging said trietietesurl'aees respeetively, and means -l'or oonjointly shitting: both ol' said pairs ol trietion--wheels radially to vary the speed of the driven wheels. r

24. In a motor-vehiele, the eomhination of a pair of rear and a pair of front tractionwheels, a main drive-shaft, a pair of fricti0nsurfaces on and operated h said shalt, a pair at drivingpe-onneetions one for both wheels at one side of the vehiele and the other for the wheels attheother side. eaeh ol' said driving connections HOIHPIiSiUQ a pair of l'rietionwheels engaging said trietion-snrhiees respeetively, means [or eoniointly shitting: hoth ol' 1 said pairs of lrietionavlieels into and out of engagement with said l'rietion-surl'aees, and

wheels radially to vary the speed of the wheels driven therel'rv.

25. in a motorwelnele, the'eonihmation of Wheels, a main drive shall, a pair of l'rietioit by said shalt, a pair ol"ilriving-eonneetions one for both wheels at one side of the vehicle and the other for the wheels at the other side, eaeh 'ol'sai'd dri\'inn-conneetions eomprisinp a pair ol l'rietion-wheels engaging said trietion-iniri'aees respectively, means for eonjointly Slliiilllg' hoth of said pairs ol l'rietionwheels into and out of ena'aaen'lent with said i'rietion-snrlaees, and means lor eonjointly trietimi-wheels radially to vary the speed oi the wheels driventherehyv a pair 01' rear and a pair ol' front traetionsnrl'aees on and operated by said shalt, a pair ol' 1.h'wingwonneetiens one lor hot-h Wheels at,

surfaces oppositely disposed on and ope ateid' :tion-snrlaees respeetivelr, and means for a pair ol' rear and a pair ot tront traet1on- I eoniointh" adjusting: hoth of said pairs of fll(ih ll-\\'llt(l5 radialh to relativelv vary the speed of the dliving-eonneetions 28. la a motor-vehiele, the eomhination of a pair of rear and a pair of front traetion wheels, a main drive-shaft. a pair of t'rietionsarlaees on and operated by said shalt, a pair of driving-eonneetions one for hoth wheels at one side olthe vehicle and the other for the wheels at the other side, eaeh of said drivingeonneetions eomprisine' a pair of friction wheels engaging said l'rietion-snrfaees respeetively, and means for shifting both of said pairs ol frietioiew heels eomprisingi'neans'for eonjointl v shitting them radially to comespondimrh' vary the speed of both driving connections and to conjointly ad inst hoth pairs: of said friction-w heels radially to relatively 'arythe speed of the drivingr-eonneetions.

2Q. la a motor-vehiele. the eomhination of a pair ol rear and a pair of front traction- -wheels, a main drive-shaft, a pair of frictionsu-rt'aees oppositeh disposed, on and operated means lor eon -,ointly shitting said lrietionby said shalt, a pair ol" driving-eonneetio1is ,'speed of hoth drivingeonneetions and to eonjoiath adjust hotli. pairs of said l'rietion- 1 wheels radially to relatiieh var the speed ot the (lll\l!lI--e()l'lneetlolls.

a pair of rear and a pair ol l'ront lraetionwheels, a main dri\ e-shatt, a pair of trietions snrlaees on and operated h said shalt, a pair ot dliving-eonneetions one for hoth wheels at 26. in a motor-velnele, the eonihination ol one side of the vehiele and the other for the,

g n heels at the other side, aeh of said drivingwheels, at mam, drive-shalt, a pair ol irretmnt-ive'ly, a steeriiig device, and means [or conjointly adjusting both pairs of frictionwheels to relatively vary the speed of said "tion-surfaces respectively, a steering-device,

and means for conjointly' adjusting both pairs of friction-wheels to relatively vary the speed .of said driving-connections, said adjustingmeans being operated by said steering-device.-

32. Ina motor-vehicle, the combination of a pair of rear and a H air of front tractionwheels, a main drive-s aft, a pair of frictionsurfaccs on and operated by said shaft, a pair of driving-connections one for both wheels at one side of the vehicle and the other for the wheels at the other side, each of saiddrivingconnections comprising a pair of frictionwheels engaging said friction-surfaces respectively, a steering-device, means for conjointly adjusting both pairs of frictionwheels tie-relatively vary the speed of said -driving.-eonnections, said adjusting-means being operated by said steering-device, and means for shifting both of said frictionwheels into and out of engagement with said frictionsurfaces.

33. In a motor-vehicle, the combination of a pair of rear and a pair of front tractionwheels, a main drive-shaft, a pair of frictionsurfaces oppositely disposed on and operated by said shaft a pair of driving-connections one for both wheels at one side of the vehicle and the other for the wheels at the other side,

each of said driving-connections comprising a pair of friction-wheels engaging said friction-surfaces respectively, a steering-device, means for conjointly adjusting both pairs of friction-wheels to relatively vary the speed of said driving-connections, said adjustingmeans being operated by said steering device, and nieansfor shifting both of said friction-wheels into and out of engagement with said friction surfaces. 4

84. In a motor-vehicle, the combination of a air of rear and a pair of front traction: whedls, a main-drive shaft, a pair of frictionsurfaces oppositely disposed on and operated by said shaft, and a pair of driving-connections one for both wheels at one side ofthe vehicle and the other for the wheels at the other side, each of said driving-connections comprising a pair of frietiornwheels engaging said frictioinsurfacesres ectively.

35. In. a motor-vehic e, the combination of a pair of rear and a ,pair of front .traction wheels, a main drive-shaft, a pair of frictionsurfaces on and operated by said shaft, and a pair of driving-connections one for both wheels at one side of the vehicle and the other for the wheels at the other side, each of said drivin -connections comprising a pair: of adjustable friction-wheels engaging said, friction-surfaces respectively.

' 36. Ina motor-vehicle, the combination of, a pair of rear and a-pair of front tractionwheels, a main drive-shaft a pair of frictionsurfaces onand operated by said shaft, and a pair-of driving-connections one for both wheels at one side of the vehicle-and the other for the Wheels at the other side, each of said driving-connections comprising apair of axially adjustablev friction-wheels engaging said friction-surfaces res ectively 37. In amotor-vehic e, the combination of a air of rear and a pair of front tractionwhee s, a main drive-shaft a pair of frictionsurfaces oppositely disposed on and operated by said shaft, and a pair of driving-connections, one for both Wheels at one side of the vehicle and the other for the wheels at the other side each of said driving-connections comprising a pair of axially adjustable friction-wheels engaging said friction-surfaces respectively.

38. In a motor-vehicle, the combination of a pair of front anda pair of rear wheels, a main-drive shaft, a wheel having oppositely disposed friction-faces thereon, and a pair of driving-connections, one for a wheel at one side, and the other for a wheel at the other, side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed.

39. In a motor-vehicle, the combination of a pair of rear and a pair of front wheels, a main drive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving-connections, one for a wheel at one side, and the other for a wheel at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed, and means for conjointly shifting both of said pairsof frictionwheels into and out of engagement with said faces. A

40. In a motor-vehicle, the combination .of a pair of front and a pair of rear wheels, a

main drive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving-connections, one for a wheel at one side, and the other for a wheel at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed, and means for shift ing both of said pairs of friction-wheels radially to vary the speed of the wheels driven thereby.-

all, iir of front end a, pair of rear wheels, e

In a motonvehicle, the combination of t alr ze-shailt, wheel having oppositely nosed rictiondzices thereon, a pan of driv- ,nnections, one for a. wheel at one side, i he other for a wheel at the other side of the vehicle, each of said connections comprising a" pair of iriction-wheels engaging said feces respectively and between which said ere disposed, means for conjoint-1y J. mg both of said pairs of lriction-wheels 0 or out of engagement with said l'oces, it means for shifting both of said pairs of ion-wheels radially to vary the speed of wheels driven thereby. V T i motor-vehicle, the combination of a pair of front end it pair of rear wheels, :1 main drive-shaft, a wheel having oppositely disposed friction-feces thereon, a pair of dflying-connections, one for a wheel at one end the other for a wheel at the other side of the vehiclc, each of solid connections comprising e pair of iIlCtiOlkWlIQGlS engaging said feces respectively and between which *l feces are disnosed and means for conointly adjusting both of said pairs of friction-wheels radially to relatively vary the speed of the driving-connections.

L3. in a motor-vehicle, the combination of pair ol front and s pair of rear wheels, a main drivcshcit, a wheel having oppositely disposed 'lriction-feces thereon, e pair of dri log-connections one [or a wheel at one side and the other for a wheel at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said laces respectively and between which said. feces are disposed, means for conjointly ihi'l'ting both of said pairs of frictionwhecls no or out of engagement with said feces, and tor coi'iynntly adjusting both of said s of lrictionovhecls radially to relatively r F the speed of the (.lriving-conneetions.

in a, motor-vehicle, the com binetion of 1- peir of front and a pair of rem wheels, o main drive-shalt, e wheel having oppositely disposed friction-feces thereon, a pair of dliving-connections one for a wheel. at one and the other for a wheel at the other side of the vehicle, each of said connections comprising e pair of friction-wheels engaging said feces respectively end between which said faces are disposed, and means for shifting both of said pairs of friction-wheels 1 dislly to vary the speed of the wheels driven thereby and for conjointly adjusting both of so-id pairs of friction-wheels radially to relati ely vary the speed oi the driving connect l n a motor-vehicle, the combination of a, pair front and n pair ol rem" wheels, av main drive-shaft, a wheel having oppositely d" osed friction-facet thereon, at pair ol' iring-connections one for e wheel at one main drive-shaft, 8- wheel having oppositely side, and the other {or e wheel at theother side of the vehicle, each of said connections comprising a pail-of lrictionqvheels engs ging said laces respectively a nd between which said faces are disposed, and means for shilt ing both of said pairs of .lrictimi-whccls roe dislly to very the speed of the wheels driven thereby end for conjointly adjusting both of said pairs of friction-wheels radially to relatively vary the speed of the driving-con nections.

46. In a motor-vehicle, the combinothm of a pair of front and it pair oi rear wheels, :1 main drivc shait, a wheel having oppositely disposed lrictiomicces thereon, :1 poir of driving-connections, one For a wheel. at one side and the other for 21. wheel at the other side of the vehicle, each of said connections comprising a, pair of frictionovheels engaging,

means being operated by the steering-device.

47. In itlIlOt ')l-V6l1l(:l0, the combimition of a pair of front and a, pair of rear wheels, at main drive-shalt, nv wheel having oppositely disposed friction-faces thereon, o pair of driving-connections, one for or wheel at one side and the other for c wheel at the other side of the vehicle, each. of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are dis osed. :i steering-(icyice, means for conjoint y adjusting both pairs of i'rictionwl1eels to relatively vary the speed of said driving-ci)nncctions, said adjustingmeans being operated by the steeringdlevicc, and means for shifting both pairs of said Friction-wheels into or out of engagement with said friction-laces respect-holy.

48. In a motor-vehicle, tho cmnbinotion of a pair of front and a pair of room wheels, :1 main drive-shaft, n wheel having oppositely disposed friction-faces thereon, at pair of driving-connections, one for a wheel at one side and the other for a wheel zit the other side of the vehicle, each of said connections coi'nprising a pair of friction-wheels engaging said faces respectively and between which said faces are dis osed, a steeringdevicc,

means fr conjoint .y adjusting both pairs of,

friction-wheels to relatively vary the speed of said driving-connections, said adjustingmeans bein operated by the steering-device, means for .i hiftingbotli pairs of said fricliom wheels into or out of engagement with said friction-faces respectively, and means for conjointly adjusting said friction--wlreels to correspondingly vary the speed of both ol said driving-coonections.

49. In a motor-vehicle, the combination of o pair of front and e pair or" rear wheels, :1

disposed friction-laces thereon, a pmr ol' drivscares h'ig- ':onnections, one for wheel at one side, and the other for a wheel at the other side of the'vchicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between 'which said faces are disposed, and a pair of frictiondishs on the main drive-shaft with which said friction-wheels are adapted to engage to drive the connections in reverse direction.

56. In a motor-vehicle, the con'ibination of a pair of front and a pair of rear wheels, a main drive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving-connections, one for a wheel at one side 1 and the other for a wheel at the other side of the vehicle, each of said connections comrising a pair of friction-wheels engaging said laces respectively and between which said faces are disposed, a pair of frictiorndisks on the main drive-shaft and with which said friction-wheels are adapted to engage to drive the connections in reverse direction, and means for conjointly shifting said fric- 9 tion-wheels into or out of engagement with said friction-faces or said disk respectively.

51. In a motor-vehicle, the combination of a pair of front and a pair of rear wheels, a main driveshaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving connections one for a. wheel at one side and the other for a wheel at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed, a pair of friction-disks on the main drive-shaft with which said friction-wheels are adapted to engage to drive the connections in reverse direction, means for conjointly shifting said friction-wheels into or out of engagement with said frictionfaces or said disks respectively, and means for conjointly'adjusting said friction-wheels to correspondingly vary the speed of tho driving-connections. i

52. In a motor-vehicle, the combination of a pair of front and a pair of rear wheels, a main driveshaft, a wheel having oppositely disposed friction-faccs thereon, a pair of driving connections one fora wheel at one side and the other for a wheel at the other side of the vehicle, each ofsaid connections comprisinga pair of friction -whcc.ls engaging said aces respectively and bcuvec'n which said faces are disposed, a pair of friction-disks on the main drive-shaft with which said friction-wl'ieels are adapted to engage to drivc the connections in reverse direction, means "for ,conjointly shifting: said friction-whm ls into or out ofengagenrcnt with said frictionfaces or said disks.respectively, and means for adjusting the friction-wlieels to relatively vary the speed of the drivingconnections.

. 53. In a motor-vehicle. the combination of a pair of front and a pair of? rear wheels, a. main :lrive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of (lriving-connections one for a wheel at one side and the other for a wheel at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed, a pair of frictiondislts on the main drive-shaft with which said friction-wheels are adapted to engage to drive the connections in reverse direction, means for conjointly shifting, said fr' tionwheels into or out of engagement with said friction-faces or said disks respectively, means for conjointly ad'usting said frictionwheels to correspondingly vary the speed of the lriving-connections and means for ad justing the f riction-wheels to relatively vary the speed of the driving-coin]ections.

54. In a motor-vehicle, the combination of a pair of front and a pair of rear wheels, a main drive-shaft, a wheel having oppositely disposed friction-faces thereon, and a pair of driving-connections, one for both wheels at one side and the other for both wheels at the other side of the vehicle, each of said connections comprising a pair of friction-wheels en gaging said faces respectively and between which said faces are disposed.

55. lna motor-vehicle, the combination of a pair of rear and a pair of front wheels, a main drive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving-connections, one for both wheels at one side, andthe other for both wheels at the other side of the vehicle, each of said connections comprising a pair of friction-wheels engaging said faces respectively and between which said faces are disposed, and means for conjointly shifting both of said pairs of friction-wheels into and out of engagement with said faces.

.56. In a motor-vehicle, the combination of a pair of front and a pair of rear wheels, a main driveshait, a wheel having oppositely disposed l'rictiond'zures thereon, a pair of driving-connections, one for both wheels at one side and the other for both wheels at the other side of the vehicle, .cach. of said connections compiising a pair offriction-wheels en'- gaging said faces. respectively and between which said faces are disposed, and means for shifting both of said pairs of friction-wheels radially to vary the speed of the wheels driven thereby. I

57. In a motorwehicle, the combination of a pair of front and a pair of rear wheels, a main drive-shaft, a wheel having oppositely disposed friction-faces thereon, a pair of driving-connections one for both wheels at one side and the other for both wheclsat the other side oi the vehicle, each of said connecspeed of the Wheels driven thereby.

said faces.

58. a motor-vehicle, the combination of a pair of front and a pair of rear tractionivheels, each or" which is dirigihly connected to the vehicle, a main di.'ive-sliaft, drivingconnections for all of said traction-wheels comprising fi'ICtIOIIrIH-CQ-S andfriction-wheels engaging said faces, means for adjusting said friction-wheels to drive the traction-wheels at one side at different relative speed. with res met to the traction-Wheels at the other, and means for shifting the friction-wheels into or out of engagement with said faces.

59. In a motor-vehicle, the combination of a pair of front and a pair of rear traction- Wheels, each of which is dirigibly connected to the Vehicle, a main drive-shaft, drivi m connections for all of said traction-whee s comprising friction-faces and friction-wheels engaging said faces, means for adjusting said friction-Wheels to drive the traction-wheels at one side at dillerent relative speed with respect-to the traction-wheelsat the other, a steering device connected to the traction- Wheels and connected to operate said adjusting-means, and means for shifting the friction-wheels into or out of engagement with 60. In a motor-vehicle, the combination of a pair of front and a pair of rear tractionwhecls, each of which is dirigibly connected to the vehicle, a main drive-shaft, drivin connections for all of said traction-whees comprising friction-faces and frictiomwheels engaging said faces, means for adjusting said frictionheels to drive the traction-Wheels at one side at different relative speed with respect to the traction-Wheels at the other,

a steering-device connected to the traction Wheels and connected to operate said adjusthag-means, and means operated by said device for turning all of the Wheels in the same direction.

61. In a motor-vehicle, the combination of a pair of front and a air of rear traction-- Wheels, each of which. is dirigibly connected to the vehicle, a main drive-shaft, driving-- connections for all of said traction-wheels comprising friction faces and friction wheels engaging said faces, means for adjusting said friction-wheels to drive the tractionswhccls at one side at different relative spcmiwilh respect to the traction-wlieols at the ()l-llt'i',

a steering device connected to the ll'zLUt-lUlk Wheelsand connected to operate said :Llljlisling--Ineans and means for rendering said adjostling-means inoperative by. tho siocring- 1 device.

62'. In a motor-vehicle, the combination of a pair of frontand a pair of rear traction- Wheels, eachof which is di. illy connected to the vehicle, a main drive-shalt, drivingconnections for all of said traction-nlirols comprising friCtiondFaccs and l'rirl'irm--\rlo engaging said faces, means for adjusting; friction-wheels to drive the tinction-v. at one side at different relative speed will rcspectto the tl'ktOti()ii'v/l19cl8 at the other, a steering-deviceconnected to the tractionwheels and connected to opera to said adjust-- ingqneans, means for turning all oi said traction-wheels in the same direction, and means for rendering thev ad"Listing-means inopcrxi tive by the steering-device.

63. In a motor-vehicle, the combination ol. a pair of front and a pair of rear wheels. a main drive-shaft, a friction drive niccliani n operated by said shaft and compr ing i'rk tion-wheels, a driving connection opvrotwl by each of'said friction-wheels, n'icniis lor adjusting said fricti0n-wli0els radially to (1H1 respondingly vary the spcod of said comm tions and means for relatively adio them to relatively vary the speed of the co: nections.

64. In a motor-vehicle, the conibir ion of a pair of front and. a pair of rear whee s a main drive-shaft, a friction drive nicclmnisin operated by said shaft and comprising lriction-wheels, a (lIlVlDgCOIH'IGGlIlUEl oporoirc' by'each of said friction-wheels, 1118:1115 for id-- justing said friction-Wheels radially to-rorrcspondingly vary the speed of said cornice-1 tions, means for relatively adjusting them to relatively vary the speed of the connci-tiims, and a steering-device to which said relatively adjusting-means is coni'iected.

65. In a motor-vehicle, the combination of a-pair of front and a pair of rca r \vlwvlo, e.

by. each ol said, l'rii-lion-wheels, means for ad jnsting' said l'rirtion-wheels radially to com spondingl vary the speed ol' said connections, means for rolzxliv ly adiii: .ing; tlHitl In relatively vary the speed of the conn riions, means for ('OHjUlililV shitting all of Llldl ll'.- lion-wheels into and old of oporotiri p i tion, and a steering-device to which said who relatively vary the speed of the connect-ions,

operatedby said shaft and comprising friction-wheels, a driving-connection operated by each of said friction-wheels,means for adjusting sajd'friction-wheels radially to correspond ngly vary the speed of said-connections, means for relatively adjusting them to relatively vary the speed of the connections, and a steering-device to which said relatively adjusting-means is connected, and means for rendering said latter adj-ustirig-means inoperative by the steering-device. v

68. In a lnotoravehicle, the combination of I a pair of front and a pair of rear wheels, a main drive-shaft, a friction drive mechan ism operated by said shaft and comprising frictlon wheels, a driving-cmineclion operated by each of said friction-wheels, means for adjusting said friction-wheels radially to col.- respondingly Vary the speed of saidconnections, means for relative y ad usting-them to a steering-device to which saidrelativelv adjusting-means is connected, means for rendering said latter adjustingemeans inopera-' tive by the steering-devic ananeans for c'onjointly adjusting all wheels into and out of operative osition.

69. In a motor-vehicle, the com 'ination of a pair of front and a pair of rear wheels, a main drive-shaft, a frictlon drive-mechanism fsaidifrictionl'operatcal by said shaft and comprising fric- "tion-whcels. a ih'iving-connection operated by each of'said friction-wheids. means for ad- "'justin g said friction-wheels radially to correspondinglv vary the speed of said connecj 'tions, and means for relatively adjusting them to relatively vary the speed of the connections, said-driving-mechanisln comprising means for driving said friction-wheels in .cither direct-ion.

70. In a motor-vehicle, the combination of a pair of front and a pair of rear wheels, a l main drive-shaft, a friction drive-mechanism operated by said shaft and comprising friction-wbeels, a driving-connection operated by each of said friction-wheels, ineans'for adjusting said friction-Wheels radially to correl-spondingly vary the speed of said connections, means for relatively adjusting them to relatively vary the speed of the connections, I said rlliving-mechanism com irising means a for driving said friction-wheels in either direction, a nd means for conjointlv adjusting 1 the friction wheels into either of their operative pos tions.

. SIEPHEN B. GRAY.

Witnesses:

FRED GERLAon, LEONE S. RUSSELL. 

